Pilot for horizontal pot burners



Sept. 20, 1949.

H. A. YAUGER |-:T AL

PILOT FOR HORIZONTAL POT BURNERS Filed Jan. 5, '1944 quantities and as it enters the vaporizing chamber 2| it is spread out in a thin film in the bottom of the chamber. Air is directed through the pipe 2 1 and into the air inlet chamber 22. As shown in Figs. 2 and 4 said inlet chamber is provided with a perforated bottom or plate 25 so that a plurality of jets of air are directed through said perforated bottom 25 against oil which has flowed into the vaporizing chamber 2|. It is to be noted that the perforations 21 in the bottom or plate 25 are so disposed that a greater number thereof are adjacent the forward edge of the bottom, so that a greater amount of air is admitted to the vaporizing chamber at a point spaced from the oil inlet 23, than is admitted immediately adjacent the oil inlet. The air and fuel vapors combine to form a combustible mixture and after the oil has been first ignited combustion will be sustained, the air and other gases flowing out through an opening 26 and thence up over the left-hand or forward edge portion of the vaporizing chamber 2| into the apertured pot l5 where sustained combustion takes place with a proper mixture with air flowing through the openings IS in the pot l5. After the fuel has first been ignited combustion takes place primarily outside of the vaporizing chamber 2| and in the .pot I5 and the central and left-hand portions of the combustion chamber With the supply of fuel to vaporizing chamber 2| controlled in a reduced quantity, subsequently complete combustion continues to take place at the open portion of the pan 2| and just forwardly thereof. When the supply of fuel is increased, the air supply from housing 22 is insufficient to produce complete combustion within the pot l5 and then sustained or operating combustion takes place at the open end of the pot l5 through first, the primary admission of air through aperture l6 and the secondary admission of air in the inlets adjacent the open end of the burner pot. The pilot B is so located in the perforated pot l5 that the flow of fuel gases and air from the vaporizing chamber 2| is initiated at a more or less centrally disposed point in the pot l5, and the burning gases are directed to the left in a centrally balanced flow.

The products of combustion flow to the left in the combustion chamber l and thence upwardly through the conduit l3 into the heat saver or radiation chamber l2 and thence through the flow connection l4.

From the foregoing description it will be seen that we have provided a pilot for a horizontally disposed pot type burner which is located substantially centrally of the pot and within the pot as distinguished from prior types of horizontal pot pilots which have been located at the lower rear side wall portion of the pot. The pilot is simply constructed and, as stated above, can be formed of relatively light sheet metal and does not require the construction of a special type of pot for use in a horizontal burner.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts tvithout departing from the scope of our invenion.

What we claim is:

l. A combination pilot and vaporizing device for pot-type liquid fuel burners of the structure having an open front end and a plurality of circumferentially distributed primary air inlet passages in the body thereof and secondary air admission means disposed adjacent the open end of the pot, comprisinga relatively small, independent vaporizing pan adapted to be mounted adjacent the axis of the burner pot and adjacent the rear end thereof, a fuel supply conduit communicating with the interior of said pan, an air distributor housing traversing and covering a substantial portion of the top of said pan and having air supply means communicating therewith, said housing having a multiplicity of air discharge openings spaced throughout the area of the bottom thereof and positioned to direct air down- Wardly against the closely adjacent surface of liquid fuel in the bottom portion of said pan.

2. The structure set forth in claim 1 and an upstanding partition dividing the interior of the pan into two sections, one of which is substantially covered by said distributor housing, said partition having a medially disposed opening therein, extending considerably above the normal oil level of said panfor communication between said two sections.

i V 3. In a horizontal, pot-type, liquid fuel burner,

nally spaced, downwardly directed discharge passages through the bottom thereof and distributed to supply jets of air against most of the area of liquid fuel in theportion of said pan covered by said chamber.

4:. The structure set'forth in claim 3 wherein a substantially greater number of said discharge passages are disposed adjacent the front portion of said chamber than adjacent the rear of said chamber.

g 5. The structure set forth in claim 3 and an upstanding partition dividing the interior of the pan into a forward, uncovered section and a rear section covered by said air supply chamber and said partition having a medially disposed, enlarged opening extending in height materially above the normal fuel level of saidpan for communication between said two sections.

6. .A pilot device for liquid fuel burners comprising a vaporizing chamber having an open topped forward portion, means forming an air chamber disposed above the rear portion of the vaporizing chamber, said air chamber having a plate with a multiplicity of apertures therein and closing off the upper part of the rear portion of the vaporizing chamber, means forsupplying air to said air chamber, and meansfor supplying liquid fuel to the rear portion of said vaporizing chamber, there being a passage from the rear portion of the vaporizing chamber to the forward portion thereof for movement of vaporized fuel and liquid fuel, and there being moreapertures near the forward edge of said plate than near the rear edge of the plate, sothat more air is admitted to the vaporizing chamber at a point remote from the liquid fuel supplying means than is admitted immediately 7 adjacent said means.

HARLAND A. YAUGER. GEORGE W. GOEI'IE.

5 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Stacey Apr. 4, 1893 Brennan Sept. 5, 1922 Breese, Jr., Sept. 6, 1927 Valjean June 16, 1931 Frame Dec. 18, 1934 Knapp et a1. -1 Nov. 22, 1938 Jenson June 20, 1939 Gilmore et a1 Sept. 10, 1940 Number Number 

